InsiderTrades

Form 4 for MKTX MARKETAXESS HOLDINGS INC

Accepted 2026-04-06 16:15:07 ET · period of report 2026-04-03 · accession 0001193125-26-143767 · SEC index · Original document

Summary rows

Aggregated the way they appear in lists: one row per insider, transaction code and security table.

X Filed Traded Ticker Insider Title Type Price Qty Owned ΔOwn Value
2026-04-06 16:15 2026-04-03 MKTX CONCANNON CHRISTOPHER R CEO, Dir F - Tax $171.46 -349 53.6K -0.6% -$59.8K

Purchase Sale Sale after option exercise All abbreviations

Every reported transaction

#TableSecurityDateCodeA/DSharesPriceOwned afterOwnExercise / expiryUnderlyingFootnotes
1 Common Common Stock, par value $0.003 per share 2026-04-03 F D 349 $171.46 53,600 D — — (F1) Represents the surrender of shares to the Company to satisfy the Reporting Person's tax withholding obligation upon the vesting of restricted stock units previously granted to the Reporting Person.